31P777-0115
REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION
1 BS-697174 Cylinder Assembly 36 BS-691279 Spring–Valve (Exhaust)
2 BS-399265 Kit-Bushing/Seal (Magneto Side) 37 BS-697352 Guard–Flywheel
3 BS-391086S Seal–Oil (Magneto Side) 42 BS-499586 Keeper–Valve
4A BS-697188 Sump–Engine 43 BS-691968 Slinger–Governor/Oil
5 BS-698148 Head–Cylinder 45 BS-690564 Tappet–Valve
7 BS-699168 Gasket–Cylinder Head 46 BS-698492 Camshaft
9 BS-697109 Gasket–Breather 50 BS-699028 Manifold–Intake
10 BS-697157 Screw (Breather Assembly) 51 BS-692137 Gasket–Intake
11 BS-697113 Tube–Breather 53 BS-690227 Stud (Carburetor)
12 BS-697110 Gasket–Crankcase (Standard) 54 BS-691148 Screw (Intake Manifold)
13 BS-690360 Screw (Cylinder Head) 73 BS-697133 Screen–Rotating
15 BS-691680 Plug–Oil Drain (Flush) 74 BS-697897 Screw (Rotating Screen)
16 BS-697127 Crankshaft 78 BS-691003 Screw (Flywheel Guard)
20 BS-690947 Seal–Oil (PTO Side) 81 BS-691178 Lock–Muffler Screw
22 BS-692125 Screw (Crankcase Cover/Sump) 93 BS-281346 Bushing–Throttle Shaft
23 BS-693556 Flywheel 94 BS-498030 Kit–Idle Mixture
24 BS-222698S Key–Flywheel 95 BS-691636 Screw (Throttle Valve)
25 BS-699052 Piston Assembly (Standard) 98 BS-495800 Kit–Idle Speed
BS-699053 Piston Assembly (.010”) 104 BS-690525 Pin–Float Hinge
BS-699054 Piston Assembly (.020”) 105 BS-231855 Valve–Float Needle
BS-699055 Piston Assembly (.030”) 106 BS-691780 Seat–Inlet (Pump Feed)
26 BS-699051 Ring Set (Standard) 108 BS-690464 Valve–Choke
BS-697558 Ring Set (.010”) 117 BS-694352 Jet–Main (Standard)
BS-697559 Ring Set (.020”) 118 BS-697228 Jet–Main (High Altitude)
BS-697560 Ring Set (.030”) 121 BS-697241 Kit–Carburetor Overhaul
27 BS-698469 Lock–Piston Pin 125 BS-699937 Carburetor (Pump Feed)
28 BS-697099 Pin–Piston (Standard) 127 BS-695005 Plug–Welch (5/16” Diameter)
29 BS-697126 Rod–Connecting (Standard) 130 BS-691750 Valve–Throttle
BS-697263 Rod–Connecting (.020”) 131 BS-494379 Kit–Throttle Shaft
32 BS-692852 Screw (Connecting Rod) 133 BS-494381 Float–Carburetor
33 BS-695760 Valve–Exhaust 137 BS-281165 Gasket–Float Bowl
34 BS-695761 Valve–Intake 141 BS-495097 Kit–Choke Shaft
35 BS-691279 Spring–Valve (Intake) 142 BS-697140 Nozzle–Carburetor (Standard)
7.
