Description Nm lb‑in. lb‑ft
Camshaft thrust plate retainer bolts 12 106.2 –
Timing Chain
Inspection
1. Inspect the timing chain for wear and damage.
2. Inspect the sprockets for wear and damage.
3. Replace the components as necessary.
Assembly
1. Install the crankshaft balancer key into the crankshaft keyway.
Crankshaft keyway
2. Align the keyway of the crankshaft sprocket with the crankshaft balancer key.
3. The crankshaft balancer key should be parallel to the crankshaft or with a slight incline.
4. Install the sprocket on the crankshaft by using the rear pinion bearing race installer tool.
a - Rear pinion bearing race installer
b - Crankshaft sprocket
Description Part Number
Rear pinion bearing race installer J5590
5. Align the marks on the crankshaft and the camshaft sprockets.
Engine Inspection and Assembly
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 3B-35
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