Service manual

GAS POWER SHOVEL
9 - 16 Single Stage Snowthrower Service Manual
COMPRESSION TEST
Compression Test Procedures
1. Install the compression gauge into the spark plug
hole. IMPORTANT: Be certain that no more than
1/2” of the gauge is threaded into the cylinder as
damage to the piston may result.
2. Pull the starter rope several times to obtain the
highest compression reading.
3. If the compression reading is below 100 psi (689
kPa), cylinder, piston, or ring damage should be
suspected. If so damaged, a new engine short
block should be installed.
ENGINE REMOVAL
1. Completely drain all fuel from the fuel tank.
2. Remove upper shroud (Figure 218). Refer to
"Removing The Upper Shroud" on page 9 - 4.
Figure 218 0406-035
3. Place the fuel tank cap back on the fuel tank.
4. Disconnect the spark plug high tension wire.
5. Fully extend the recoil starter rope and tie a knot
in the rope at the starter idler pulley (Figure 219).
Figure 219 0406-036
6. Thread the knot at the end of the recoil starter
rope through the side of the rope handle and untie
the knot.
7. Remove the choke linkage, fuel line, and primer
hose from the carburetor.
8. Disconnect the lead wires from the On/Off switch.