Sahara 40 User Manual: Assembly, Break-In, Maintenance & Troubleshooting

Short answer: assemble the Sahara 40 in the order below, check fuel, oil, brakes, tires (7-10 psi) and fasteners before every ride, run the engine in for about 15 minutes on the first start, and keep the drive chain, air filter and spark arrestor on the schedule in the maintenance table. If it will not start, check fuel, choke, the fuel primer, the spark plug and the emergency stop switch cap, in that order.

Download the PDF manual Sahara 40 product page

Sahara 40 quick facts

These figures come from the manual's specification page and notices. The manual lists the model as LY-ATV-40L.

Item	Manual states
Intended rider age	Age 6 and up. The cover says never permit children under 6 to operate it, and adult supervision is required for children under 16.
Riders	Rider only. Never carry a passenger.
Maximum weight	65 kg
Engine	Single cylinder, four-stroke, air-cooled, 40cc
Power and torque	0.9 kW at 6500 rpm; 1.6 Nm at 5000 rpm
Starter	Manual pull start
Brakes	Front and rear disc
Tires	4.10-6 front and rear; operating pressure 7-10 psi
Fuel tank	1.0 L
Weight	Net 36 kg (79 lb); gross 47 kg (96 lb)
Packed size	102 x 56 x 49.5 cm
Speed limiter	A limiting-speed device sits in the right handle; the rider can raise speed by adjusting it. The manual gives no speed figures for its settings.
Emergency stop	Red emergency shut down button on the left handle
Intended use	Off-road only, on closed tracks with an even, smooth surface. Not for public highways or rough terrain.

More detail: Sahara 40 specifications and Sahara 40 dimensions.

What is in the box and which tools you need

The Sahara 40 ships in a carton with the quad held in an iron shipping frame, with the handlebars and brake lever folded. A tools bag contains the number plate, the handlebar nuts and an aluminum block for the handlebar clamp. Keep the bag until assembly is finished.

Tools the manual calls for, by step:

Handlebar and front protector: 8-10 wrench, screwdriver
Front tire: 12-14 wrench, 13-17 wrench, M8 hex key
Rear tire and heat protector: the rear axle nut and the screw supplied with the heat protector

The manual also recommends gloves for sharp edges, and a soft-face hammer if a part must be tapped into place.

How to assemble the Sahara 40, step by step

Assembly follows eight steps in the manual. An adult should do it. The manual says correct set-up is essential to reliability and rider safety, so read every step first, keep parts and the work area clean, and use gloves around sharp edges.

Manual warning: an error during set-up can damage the machine or injure the rider. Avoid contact with moving parts, and follow torque specifications exactly as outlined. The manual does not list numeric torque values on the pages provided, so tighten fasteners firmly without over-tightening and contact FRP support if you need a figure.

Unpack. Open the carton, take out the ATV with its iron frame, then remove the iron frame. (Pictures 1, 2)
Set up the handlebar and plastic protection cover. Tools: 8-10 wrench. Take the number plate from the tools bag and install it on the steering rod. Take the nuts from the tools bag, set the handlebar in a comfortable position, and tighten the bolts. Then attach the plastic protection cover to the handlebars. The brake lever bolt and throttle grip come already tightened. Do not use excessive force; over-tightening can damage threads or other parts. Check that both cables (throttle and brake) move smoothly and freely. (Picture 3)
Set up the front protector and rear handle. Tools: 8-10 wrench, screwdriver. (Picture 4)
Set up the front tires. Tools: 12-14 wrench, 13-17 wrench, M8 hex key. Loosen the nut on the front wheel mount, connect it to the frame in the correct direction, then tighten the nut. Next, the steering tie rod has a nut and a spacer bush: loosen only the nut, connect the tie rod to the frame and tighten it. The spacer bush sits above the plate and the nut goes under the plate. (Pictures 5-8)
Set up the rear tires. Loosen the nut on the rear axle, tear off the tape on the axle, pass the axle through the tire in the correct direction, then fasten the nut securely. (Pictures 9-11)
Install the heat protector with the screw it comes with. (Picture 12)
Set up the rear handle and finish assembly. (Picture 13)
Test drive. Fill the fuel tank with gasoline, check the engine oil level, then pull-start the engine and test it.

Manual note: the manual says set-up and pre-delivery service should be done by an authorized dealer. If you are not comfortable with any step, contact FRP support before riding.

Assembly videos

How to Assemble and Start the FRP Sahara 40 Mini Quad: Step-by-Step Guide (4:23)
How to Start the FRP Sahara 40 Mini Quad (0:46)
How to Replace the Heat Protector on FRP Sahara 40 ATV (0:34), for step 6
How to Replace Front Brake & Front Tire on FRP Sahara 40 ATV Mini Quad (1:22), for step 4
How to Replace Rear Brake & Rear Tire on FRP Sahara 40 ATV Mini Quad (1:10), for step 5

Sahara 40 pre-ride checklist for parents

Check these items before every ride. The manual also says to check bolts, nuts, engine and brake settings before and after every use.

Item	What to check
Fuel	Enough fuel in the tank; no leaks from the fuel line.
Engine oil	Oil level correct, and no oil leaking from the ATV.
Front and rear brake	Both work; lever free play is right; lubricate the cable if needed.
Throttle	Moves smoothly and returns; check cable free play; lubricate cable and lever housing if needed.
Wheels and tires	No wheel damage; tire condition and tread depth OK; pressure 7-10 psi.
Chassis fasteners	Nuts, bolts and screws properly tight.
Switches	Engine stop switch and the red emergency shut down button both work.
Speed limiter	Check the limiting-speed device in the right handle is set as you intend before the child rides.
Drive chain	Correct tension and lubricated (see maintenance).
Labels	Warning labels present and readable. Ask your dealer for replacements if they are lost or faded.

Show your child the controls before the first ride: engine stop switch, emergency shut down button, brake levers and throttle grip. The manual says the right lever works the front disc brake and the left lever the rear disc brake, and the red button on the left handle stops the ATV immediately when pulled out.

How to start and ride the Sahara 40

Turn the ON/OFF switch to ON.
Set the choke lever to CLOSE when the engine is cold. If the engine is hot or the weather is not cold, you do not need the choke.
Press the fuel pump several times until no air bubbles show in the fuel line.
With the engine upright and the pull handle pointing up (the manual says upright for at least 3 minutes), pull the recoil handle gently until you feel resistance, then pull rapidly. A slow pull makes a weak spark and the engine will not start.
As the engine warms up, slowly move the choke lever to OPEN, then set the throttle to the speed you want.

Do not start or run the engine with the fuel return line disconnected between the carburetor and tank, or for long periods with the tank cap open. Oil showing in the air cleaner after the engine has been turned on its head is normal, according to the manual.

Riding: sit on the front part of the seat, do not lean back, and keep body weight forward. Reduce speed in corners. To brake, close the throttle to idle while squeezing the front or rear brake lever. Stop the engine with the red engine stop switch. See also FRP video tutorials.

Sahara 40 break-in

The manual suggests a 15-minute run-in for a new engine to get full performance. It gives no other break-in schedule. During the run-in, warm the engine with the choke moving slowly to OPEN, and set the throttle to the engine speed you want. Keep the first ride short and gentle, then apply the first-month oil change shown in the maintenance table below.

Sahara 40 maintenance schedule

The manual's periodic chart says to perform each service at whichever interval comes first. Shut the engine off, and make sure the engine and exhaust are cold before any inspection.

Item	Service and interval
Engine oil	Check level every time you ride. Change at the first month or 10 hours.
Air filter	Check every time. Clean at 3 months or 25 hours (more often in dusty conditions; replace the felt if needed).
Spark plug	Check and adjust at 1 year or 100 hours. Change at 2 years or 300 hours.
Spark arrestor	Clean at 1 year or 100 hours per the chart; the text on the spark arrestor page says every 50 hours of use.
Idle speed	Check and adjust at 1 year or 100 hours (dealer job unless you have the tools and ability).
Ignition timing	Check at 300 hours (dealer job).
Nuts and bolts	Check fastening every time.
Valve clearance	Check and adjust at 6 months or 50 hours (dealer job).
Fuel filter	Check at 1 year or 100 hours.
Tire pressure	Check every time. Manual: 7-10 psi (chart: 69 kPa).
Drive chain	Lubricate after every ride and especially in wet conditions. Adjust so the chain has 5 mm (0.2 in) of play; do not over-tighten.
Brake pads	Replace badly worn pads promptly to keep braking performance.

Drive chain adjustment

Loosen bolts No. 1 and No. 4 on the rear axle carrier, adjust bolts No. 2 and No. 3 to a comfortable position, then tighten No. 1 and No. 4 to set chain tension at 5 mm (0.2 in). If you replace the chain, also check the front and rear sprockets for wear. A poorly adjusted chain can cause serious injury.

Spark arrestor cleaning

With the engine off and cold, remove the 3 screws on the back of the exhaust, carefully remove the heat-resistant gasket so it can be reused, clean the screen with detergent, water or a wire brush and let it dry, clear carbon from the exhaust chamber with a small towel or vacuum, then refit with the gasket sealed. A clogged arrestor blocks exhaust flow and slows the ATV.

Air filter, front axle alignment, storage and transport

Air filter: never run the engine without it. Inspect for dust build-up, check the bolts, then refit the felt filter and foam filter one at a time and close the cover.
Front alignment: adjust steering tie rod length until toe-in is between 0 and 1 degree.
Storage: for long periods, drain fuel from the tank and carburetor, inflate tires to normal pressure, remove and clean the spark plug, put a few drops of motor oil into the cylinder, and pull the starter rope 2-3 times to coat the cylinder walls.
Transport: strap it down on four sides so it cannot move.

The manual lists these as normal wear items not covered by warranty: plastic body, tires, chain, brake disc and pads, clutch and spark plug. Details on coverage: FRP ownership promise. Parts: Sahara 40 parts.

Sahara 40 will not start: common problems and fixes

The manual's troubleshooting chart works through five checks in order.

Fuel. Check the tank level. If it is empty, add fuel. If there is fuel but it has sat in the tank for a long time, replace it.
Choke on the air filter. Make sure the choke is in the UP position.
Carburetor. Squeeze the fuel primer bulb to make sure there is no air inside the line.
Ignition. Remove the spark plug and look at the electrodes. If wet, wipe with a dry cloth and correct the plug gap or replace the plug, then check the emergency stop switch. If dry, replace the carburetor or contact FRP support.
Emergency stop switch. Check the emergency switch and make sure its cap is fully seated. A pulled-out red button will stop the engine.

Other manual notes

Weak spark, slow speed, poor braking

A slow pull on the starter gives a weak spark. A clogged spark arrestor slows the quad. Worn brake pads reduce braking, and a poorly adjusted chain is unsafe. See the matching sections above.

Sahara 40 safety, gear, supervision and legal notes

Manual warning: operating this ATV under age 6 raises the risk of severe injury or death. Never permit children under 6 to ride it. Adult supervision is required for children under 16. This ATV is not a toy.

Always wear a DOT-compliant helmet, goggles, long sleeves, long pants, over-the-ankle boots and gloves.
Ride on designated trails or closed tracks at a safe speed. The Sahara 40 is not for public roads, and the manual says it is not designed for rough terrain.
No passengers. Never ride under the influence of alcohol or drugs. Do not lend the ATV to anyone who does not know it.
The manual recommends a hands-on ATV RiderCourse and the free online E-Course from the ATV Safety Institute (800-887-2887, atvsafety.org), and lists eight practice maneuvers for first-time riders: large oval with stop and start, figure 8s, corners, slalom, panic-stop oval, obstacles, traversing a hill, and a K-turn.
Follow local law. Where riding is allowed and vehicle shipping is possible depends on your state; gas ATV shipping to California is restricted, see shipping.
Keep the warning labels on the vehicle, and record the VIN (stamped on the front pipe under the frame) and engine number (stamped on the right of the engine) for parts orders.

Broader guidance: kids ride guide and FRP Moto answers.