Product Manual

100 SERIES ONE-MAN AUGER
FORM GOM08042002US, VERSION 1.0
English-EN 18
NOTE: Centrifugal clutch drum/pinion shaft assembly removal and installation
will require a level working platform of sufficient size and appropriate height. As
an alternative, the transmission output driveshaft can be securely mounted in
suitable bench vise.
1. Drain fuel from fuel tank into a UL, CSA or UN marked, European ADR
regulation approved fuel container and oil from engine crankcase. If re-
use is not possible, disposal must be carried out according to
international and local environmental standards.
2. Using 7/16 inch (12 mm) wrench, remove four K-lock type nuts that retain
engine to transmission. Remove engine from transmission and operator
handle from engine leaving throttle cable connected to engine. Store
operator handle in a position that does not damage throttle cable.
3. Remove transmission assembly bolts. Use plastic hammer to split/
separate transmission cover and case. DO NOT damage alignment
dowel pins.
NOTE: If bearing journals of secondary pinion gear are difficult to remove from
ball bearings, transmission cover and case will separate with greater difficulty.
It may be necessary to provide a supplemental force to the pinion journals to
assist the removal process. If difficult to remove, complete STEP 4 thru 5. If
able to remove journals easily and separate cover and case, proceed to
STEP 6.
4. Using Phillips screwdriver, remove screw, lock washer and flat washer
from outside of transmission cover and set aside. FIGURE 22
5. Insert a 1/4-20 UNC cap screw with a minimum 1 inch (25.4 mm) into
location where screw was removed. Using wrench, turn capscrew in
clockwise direction to apply thrust against pinion bearing journal until it
clears pinion gear support bearing. FIGURE 22
FIGURE 22
6. Using snap ring pliers, remove snap ring retaining clutch drum/shaft
assembly to transmission cover. FIGURE 23
FIGURE 23
7. Inspect support bearings for excessive wear. Replace as necessary.
8. Install replacement drum/shaft assembly in transmission cover.
Determine drum fits tight against the bearings.
9. Reinstall snap ring.
10. If it is determined transmission grease should be replaced, refer to
CHANGING AUGER TRANSMISSION LUBRICANT in MAINTENANCE
INSTRUCTIONS section of this manual.
11. Remove old gasket and install new one.
12. Reinstall transmission cover to case, being careful to align transmission
dowel pins during process.
13. Reinstall transmission assembly bolts with hexagon nuts placed on
transmission cover side. Torque all bolts to 96 inch pounds (12 N.m.) in
an “X” sequence.
14. Rotate driveshaft and check for excessive noise and/or binding. If
excessive noise and/binding is evident, disassemble transmission and
investigate for probable causes. Reassemble and retorque to specified
amount. Recheck for excessive noise and/or binding.
15. Reinstall operator handle to engine and engine to transmission with
correct orientation to the operator handle. Throttle control of operator
handle locates on same side of engine with ON/OFF ignition switch and
same side of transmission cover that pressure relief valve is located.
16. Using 7/16 inch (12 mm) wrench, reinstall and tighten the four K-lock
nuts. Tighten nuts to an approximate 90 inch pound (10 N.m.) value.
NOTE: There is not adequate space to allow use of a conventional torque
wrench.
17. Rotate driveshaft and check for excessive noise and/or binding. If
excessive noise and/or binding is evident, disassemble engine from
transmission and investigate for probable causes. Reassemble and
retorque to the specified values. Recheck again for excessive noise
and/or binding.
18. Refill engine fuel tank and crankcase with appropriate fluids as required.
DANGER
• DO NOT smoke near fuel tank.
• DO NOT fill fuel tank with engine running or if it is hot.
• Allow ample time between each refueling for engine to
cool.
• An ignition source in close proximity to fuel tank can be
the source of an explosion, resulting in property damage
and/or personal injury.
• Consult material supplied by engine manufacturer for
information relative to proper fueling procedures.
WARNING
• Improper engine mounting orientation to transmission
can reduce machine control during hole digging process.
• Such an occurrence can result in property damage and/or
personal injury.