Service Manual

Single Stage Snowthrower Service Manual 9 - 17
GAS POWER SHOVEL
9. The engine is mounted on a single engine mount
and is supported with a rubber isolator mount. To
disconnect the engine from the housing, remove
the screw and nut which hold the engine mount to
the housing (Figure 220).
Figure 220 0406-037
10. Remove the rubber drive coupling from the
crankshaft adaptor and remove the engine from
the housing (Figure 221).
Figure 221 0406-038
ENGINE SHORT BLOCK
If engine compression falls below 100 psi, or if internal
damage to the cylinder has occurred, the engine short
block must be replaced. An engine short block is
available as a factory sealed assembly only. Individual
replacement short block parts (such as a piston, piston
ring, crankshaft, cylinder, and crankcase) are not
available.
To Replace An Engine Short Block
1. Remove the engine from the snowthrower frame
(Refer to "ENGINE REMOVAL" on page 9 - 16).
2. Remove the carburetor and stress plate screws.
Scrape excess gasket material away from the
carburetor body with a putty knife or a wooden
dowel (Figure 222).
Figure 222 0406-039