Remove Gear Case; Removing Injector Pump; Removing Timing Gear Case - Briggs & Stratton MS-1055 Repair Manual

TIMING GEARS AND GEAR CASE
4. Hold idler gear as shown and check gear backlash
between injector pump timing gear and idler gear
using dial indicator, Fig. 9.
Injector pump timing gear backlash must not exceed
0.2 mm (.008").
NOTE: Idler gear must not turn while checking.
If gears are worn it is recommended that they be
replaced as a set.

REMOVE GEAR CASE

1. Remove injector pump timing gear with a three jaw
puller, Fig. 10.
a. Remove 2 nuts and injector pump. Discard
O-ring.
2. Remove parts in sequence shown, Fig. 11.
a. Remove 3 screws and camshaft retainer.
b. Remove remaining 5 screws.
3. Remove timing gear case and discard gasket,
Fig. 12.
a. Remove oil pump rotor from cylinder block.
4
3
Fig. 9 – Checking Injector Pump
Fig. 10 – Removing Injector Pump
B
B
Fig. 11 – Removing Timing Gear Case
Fig. 12 – Remove Timing Gear Case
Timing Gear Backlash
O-RING
ROTOR
A