Briggs & Stratton Twin Cylinder L-Head, Руководство по ремонту

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Remove Exhaust Nipples (If Equipped)
Remove exhaust nipples by loosening lock nuts first
and then turn out nipples. Penetrating oil may be
required to prevent galling exhaust port threads,
Fig. 12.
Fig. 12 – Exhaust Nipple
EXHAUST
NIPPLE
LOCKNUT
Remove Port Liners (If Equipped)
Remove two (2) cap screws, port liners and gasket,
Fig. 13. Penetrating oil may be required to loosen and
prevent galling port liner mounting threads.
Fig. 13 – Removing Port Liners
GASKET
CAP
SCREWS
PORT
LINER
INSPECT EXHAUST SYSTEM
All Models
Check muffler mounting bracket and/or muffler adapt-
ers for cracked welds or breakage. Check muffler(s) for
split seams, loose internal parts or cracked welds.
Replace any damaged parts with new Original Equip-
ment Parts.
ASSEMBLE EXHAUST SYSTEM
All Ducted Engine Models
Use Valve Lubricant (Part #93963) on all exhaust
system threads to prevent galling of threads and
permit easier disassembly, should it be required.
Fig. 14 – Install Port Liners
GASKET
CAP
SCREWS
PORT
LINER
Install Exhaust Nipple
1. Install lock nut on nipple with tangs toward
shoulder, Fig. 14.
2. Thread nipple into exhaust port finger tight.
3. Tighten lock nut securely, not more than two (2)
threads should be showing, Fig. 14.
Install Exhaust Port Liners
1. Install port liner, new gasket and cap screws,
Fig. 15.
2. Torque cap screws to 90 in. lbs. (10.0 Nm).
Fig. 15 – Exhaust Nipple Installed
SHOULDER
TANG