Service Manual

GAS POWER SHOVEL
9 - 14 Single Stage Snowthrower Service Manual
6. Install the metering diaphragm over the gasket
and locating pins on the carburetor body. The
metering diaphragm should be installed with the
metering disc toward the carburetor body (Figure
214).
Figure 214 0406-031
7. Install metering diaphragm cover.
8. Connect the choke linkage to the choke lever.
9. Install the carburetor onto the engine backing
plate with a new carburetor gasket and a new
spitback cup gasket. Torque the carburetor
mounting screws at 35 - 40 in·lbs (.4 - .45 Kg·in)
(Figure 215).
Figure 215 0406-032
ENGINE SERVICE
Service Items Which Require Removing The
Engine
• Recoil Starter
• Muffler
• Ignition Timing
• Flywheel Replacement
• Short Block
• Backing Plate Replacement
• Cooling Shroud Replacement
• Lower Housing Replacement
• Decarboning the Cylinder
Prior To Removing The Engine, These preliminary
Checks Should Be Made:
1. Check the ignition switch and switch wires. Refer
to Figure 194.
2. Check the spark plug:
A. To ensure the correct type (NGK BMR-6A or
Champion RCJ-8, Autolite AR7N).
B. For damage to the insulator.
C. For excessive carbon or burnt electrodes.
D. For the correct gap .020 - .024 (.5 - .6mm).
E. Check for spark – Refer to "CHECKING FOR
SPARK" on page 9 - 15.
3. Fuel Supply
A. Check the choke position.
B. Check the condition of the fuel for freshness,
contaminants, and proper mixture.
C. Check fuel tank for contaminants and flush the
tank with a small amount of fresh fuel.
D. Gas cap and gas cap vent valve.
E. Fuel line for kinks, bends, or obstructions.