Briggs & Stratton Twin Cylinder L-Head Repair Manual page 65

3. Refer to Service Engine Sales Manual Microfiche,
MS-6225 or the Service Sales Manual, MS-4052
for Top-No-Load RPM by engine model and type
number. See Example, Fig. 29.
4. Move control lever to ''FAST" position and check
engine RPM.
5. Turn Top-No-Load adjustment screw to obtain
specified RPM, Fig. 30.
NOTE: Top-No-Load adjustment screw range is
± 100 RPM. To increase or decrease
engine RPM beyond this range, change
governor spring.
Fixed Speed Adjustable – Generator – Twin II
(Type Nos. 1100 & Above)
1. Disconnect speed regulator knob from bracket
and loosen knob to end of threads.
2. Push adjustment rod in as far as it will go.
3. While holding rod in, bend governed idle tang to
obtain 1300 RPM, Fig. 31.
4. Pull adjustment rod out to end of travel.
5. While holding rod in this position, adjust Top-No-
Load adjustment screw, Fig. 32, to obtain Top-No-
Load RPM for the generator type shown in Table 1.
Table 1
Generator Top-No-Load
Type
3600 RPM 60 Cycle 4300 RPM
3000 RPM 50 Cycle 3600 RPM
1800 RPM 60 Cycle 2200 RPM
10
4
Regulated
RPM RPM
3700 RPM
3100 RPM
1875 RPM
MAXIMUM RPM
Model Type
422437 0015
422437 0015
422437 0016
422437 0019
422437 0020
422437 0021
422437 0021
422437 0022
422437 0022
Fig. 29 – Engine RPM
INCREASE
Fig. 30 – Top-No-Load Adjustment Screw
KNOB
FIXED
ADJUSTABLE ROD
INCREASE
DECREASE
TANG BENDER
Fig. 31 – Adjust Governed Idle
INCREASE
Fig. 32 – Top-No-Load Adjustment Screw
Trim RPM
01 3400
02 3400
01 3400
01 3400
01 3400
01 3400
02 3400
01 3700
02 3700
DECREASE
TANG
DECREASE