Wet, multi-plate (Available in manual or automatic centrifugal variants)

0.8 Liters (approx. 0.85 US quarts) Oil Capacity (Disassembly): 0.9 Liters

If adjustment is needed, loosen the locknut with a 9mm wrench and turn the square adjuster screw until there is a slight, smooth drag on the feeler gauge.

Using the manual, you locate TDC (Top Dead Center) on the compression stroke. The manual includes a specific diagram showing the "O" mark on the flywheel aligning with the crankcase notch. Without the manual, novices adjust valves on the exhaust stroke, causing hard starting and backfiring.

The 152FMH engine roared to life under the hood of Jack's trusty old van. He had inherited the vehicle from his father, who had lovingly maintained it over the years. But now, with the van's mileage creeping into the triple digits, Jack knew it was time to take a closer look under the hood.

Check for air leaks around the carburetor intake manifold O-ring or paper gasket. Spray starting fluid around the intake tract while running; if idle RPM shifts, a leak is present.

Measure AC voltage out of the Black/Red wire while cranking. It should read at least 30–50V AC.

Compress the rings carefully as you slide the cylinder block over the piston.

High-quality 4-stroke motorcycle oil, SAE 10W-40 JASO MA or MA2 (formulated for wet clutches). Avoid standard automotive oils containing friction modifiers, as they cause clutch slippage. Essential Torque Specs Cylinder Head Nuts (M8): 10–12 ft-lbs (14–16 Nm) Cylinder Head Side Bolts (M6): 7–9 ft-lbs (10–12 Nm) Spark Plug: 9–12 ft-lbs (12–15 Nm) Engine Oil Drain Plug: 15–18 ft-lbs (20–25 Nm) Stator Flywheel Nut: 30–35 ft-lbs (40–48 Nm) Clutch Hub Nut: 28–32 ft-lbs (38–44 Nm) 3. Routine Maintenance Procedures Engine Oil Change