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Service Manual

ManualsBrandsToro ManualsOutdoor Power EquipmentTITAN 54 in. IronForged Deck 21.5 HP Commercial V-Twin Gas Dual Hydrostatic Zero Turn Riding Mower CARB
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Table of Contents
Inspection
Twin Cylinder Engine Service Manual
February 2017 - Digital Edition
ENGINE INSPECTION AND RECONDITIONING
Upper End Inspection and Reconditioning (Cont.)
Valve Reconditioning (Lapping) (Cont.)
7. Clean entire cylinder head and all valves of grinding compound with hot soapy water.
8. After drying, apply a light coat of engine oil.
NOTE: To avoid severe engine damage, be sure to remove all lapping compound from the head and valve
components before reassembling.
Valve Spring
1. Inspect the free length of the valve spring. (Figure 6).
Valve Spring
Standard 1.55-1.60 in.
Service Limit 1.53 in.
2. Inspect for bent coils of the spring, spring stands straight.
Valve Mounting Components
1. Clean and inspect all other valve mounting components.
-Spring retainers
-Keepers
-Spring seats
Figure 6