Adjust Armature Air Gap - All Models; Routing Ignition Wires; Breaker Points; Remove Breaker Points - Briggs & Stratton Twin Cylinder L-Head Repair Manual

Adjust Armature Air Gap – All Models
1. Rotate flywheel until magnet is under armature
laminations.
2. Place thickness gauge between magnet and arma-
ture laminations, Fig. 14.
Magnetron Ignition: .008"-.012"
(.20 mm-.30 mm)
Breaker Point Ignition: .010"-.014"
(.25 mm-.36 mm)
3. Loosen mounting screw so magnet will pull arma-
ture down against thickness gauge.
a. Torque screws to 25 in. lbs. (2.8 Nm).
4. Rotate flywheel to remove thickness gauge.

Routing Ignition Wires

The ignition armature is mounted on No.1 cylinder. The
short spark plug lead goes through opening between
#1 breather and back plate, under intake manifold and
around to #1 spark plug, Fig. 15. Magnetron ground
wire, or armature primary wire (breaker points) uses
same opening to stop switch terminal. Long spark plug
lead is for #2 cylinder. Route through same opening in
back plate, and under intake manifold to #2 spark plug,
Fig. 15.

BREAKER POINTS

Remove Breaker Points

1. Remove screw and breaker point cover.
2. Remove condenser mounting screw.
3. Loosen lock nut, then adjusting screw, Fig. 16.
4. Remove breaker points and condenser.
5. Remove ground wire, condenser wire and primary
wire.

Check Breaker Point Plunger And Seal

Reject length of plunger is 1.115" (28.32 mm), Fig. 17.
Replace plunger if worn if fiber tip is loose.
Replace plunger seal if torn or leaking.
6
2
CYLINDER #2
CONDENSER
MOUNTING
SCREW
Fig. 16 – Remove Condenser and Points
PLUNGER
SEAL
Fig. 14 – Adjust Air Gap
#1 BREATHER
BACK PLATE
Fig. 15 – Typical Wire Routing
LOOSEN
LOOSEN
FIBER
TIP
UP
REJECT AT
1.115" (28.32 mm)
Fig. 17 – Check Plunger and Seal
GAUGE
CYLINDER #1
STOP SWITCH
TERMINAL
BREAKER
POINT
MOUNTING
BRACKET
ADJUSTING
SCREW
LOCK
NUT