Rocker Cover Removal; Valve Clearance Inspection; Valve Clearance Adjustment - Cushman HAULER 800X Technician's Repair And Service Manual

ENGINE
Read all of Section B and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
B
Cylinder Compression should be between 9 - 11 kgf/
2
cm (128-156 psi)
If the compression is higher than 9 kgf/cm
piston rings, cylinder and valves are probably in good
condition.
If the compression is over 11 kgf/cm
the following:
1. Carbon build-up on the piston crown and cylinder
head - clean off any carbon on the piston crown and
cylinder head
2. Cylinder head gasket - use only the proper gasket.
The use of a gasket of incorrect thickness will change
the compression.
3. Valve guides and piston rings - rapid carbon
accumulation in the combustion chamber may be
caused by worn valve guides and/or worn piston oil
rings. This may be indicated by white exhaust smoke.
If cylinder compression is lower than 9 kgf/cm
check the following:
1. Gas leakage around the cylinder head - replace the
damaged head gasket and check the cylinder head for
warp.
2. Condition of the valve seating.
3. Valve clearance.
4. Piston/cylinder wear, piston seizure.
5. Piston ring, piston ring groove.

Rocker Cover Removal

Tool List
Ratchet ........................................................................ 1
Extension 6" ................................................................ 1
Socket, 10 mm ............................................................ 1
1. Remove the four bolts (5) securing the rocker cover.
2. Remove the rocker cover (2) and the gasket.
Fig. 19 Rocker Cover
Page G-8
2
(128 psi) the
2
(156 psi), check
2
(128 psi),
Qty.
6
5
Repair and Service Manual

Valve Clearance Inspection

Tool List
Allen Bit, 3 mm.............................................................1
Ratchet ........................................................................1
Extension 6".................................................................1
Feeler Gauge...............................................................1
Wrench, 14 mm ...........................................................1
Torque Wrench, in. lbs .................................................1
NOTICE
Valve clearance must be checked when the engine is
cold (at room temperature).
With the rocker cover removed, Place the piston at TDC
of the compression stroke turning the crankshaft in its
rotational direction.
Then check the valve clearance with a feeler gauge (7),
measure the valve clearance between the rocker arm (8)
and the valve stem end.
Valve Clearance (when cold): Inlet, Exhaust 0.10 - 0.15
mm (0.004 - 0.006 in.)
7
8
Fig. 20 Measure Valve Clearance
If the valve clearance is incorrect, adjust it.

Valve Clearance Adjustment

Turn the crankshaft to the proper direction until the pis-
ton is at TDC of the compression stroke.
Qty.