Yanmar Tractor Valves and Decompression Lever Adjustment

This is how to adjust the valve clearances and adjust the decompression lever on a Yanmar or John Deere tractor. If your Yanmar or John Deere tractor has low compression you might need to adjust the valves or adjust the decompression lever on your tractor. MANUAL & TOOLS BELOW ↓↓↓↓

➤ Abandoned Yanmar Tractor WILL IT START? Part 1?:    • Abandoned Yanmar Tractor WILL IT STAR...  

➤ Service Manual (Yanmar Engines): https://bit.ly/3Lk7gVP
➤ ALL Yanmar Manuals!!!: https://bit.ly/3TexzyH

➤ Valve Clearance: .006"

Timestamps:
0:00 Intro
0:06 Timing Marks
1:24 Find TDC Compression Stroke
2:02 Adjust Cylinder 2 Valve Clearances
3:04 Adjust Cylinder 1 Valve Clearances
3:49 Adjust Decompression Lever
6:53 Old Valve Inspection
7:58 Outro

Tools:
● 1-13/16" Socket: https://amzn.to/3cXjUaT
● 3/4" to 1/2" Adapter: https://amzn.to/31aYhRB
● Straight Feeler Gauges: https://amzn.to/3nGUaUW
● Bent Feeler Gauges: https://amzn.to/32ud1f5

*** The crankshaft nut can be different sizes. Measure your nut before you buy a socket. Mine was 46mm or 1-13/16".***

Should work on these Yanmar models:
● Yanmar YM1500
● Yanmar YM1700
● Yanmar YM2000
● Yanmar YM240
● Yanmar YM2210
● Yanmar YM2310
● Yanmar YM2610

Should work on these John Deere models:
● John Deere 850
● John Deere 950
● John Deere 1050

Should work on these Tractor Engines:
● 2T
● 2TR20
● 2TR20-A
● 2TR20-AX
● 3T

This is a Yanmar YM2000B with a 2TR20-A engine.

As an Amazon Associate I earn from qualifying purchases.
#enginerebuild #valveadjustment #yanmar #tools #tooltips #mechanic