162fmj Engine Service Manual Jun 2026

Remove the tank and rocker arm cover (top of the cylinder head).

Remove the cylinder head (OHV, so the cam stays in the block).

If the cylinder bore exceeds 62.10 mm or displays deep vertical scoring, it must be rebored or replaced.

Single-cylinder, 4-stroke, air-cooled, OHV (Pushrod) Displacement: 149.4 cc Bore x Stroke: 62.0 mm × 49.5 mm Compression Ratio: 9.0:1 or 9.2:1 (variant dependent) Starter System: Kick start and/or Electric starter

Are you planning a or a full engine teardown ? Service manual part engine For CG-125/150 162fmj Engine Service Manual

Drain the engine oil completely and remove the right-side engine crankcase clutch cover.

Regular service prevents premature wear on the pushrods, rocker arms, and cylinder walls. Follow this interval checklist: Break-In / Interval Action Required

She stood in the moonlight, greasy manual in hand, and understood: The 162fmj was not an engine. It was a keeper of balance. And this manual was not a guide to repair. It was a guide to remembering —a catechism for a world that had forgotten that machines breathe, suffer, and can love their mechanics back.

Run the engine for 3–5 minutes to warm the oil for better draining. Remove the tank and rocker arm cover (top

The engine is a workhorse in the world of small-displacement motorcycles, ATVs, and go-karts . Commonly found in GY6-style, vertical-cylinder, 150cc-class machines, this air-cooled, single-cylinder engine is loved for its simplicity, affordability, and widespread availability of parts.

To help customize this manual for your specific machine, what is this engine installed in? Also, Share public link

Based on common CG150/162FMJ configurations, the specifications are:

Adjust the idle screw until the engine idles smoothly around 1,400-1,600 RPM. Follow this interval checklist: Break-In / Interval Action

When you need to repair your 162FMJ, you'll often find it under its "parent" designation:

Mud or debris blocking the cylinder cooling fins. Excessive Engine Noise

Place a drain pan beneath it and remove the plug. Be careful, as a spring and a thimble-shaped wire mesh screen will drop out.

Insert a socket wrench onto the flywheel bolt through the central crankshaft hole.