Valve Seats (Fig. 57, 58)
1. Check the valve seat for damage and signs of incor-
rect contact.
2. If the valve seat is defective, the seat can be re-cut
to the dimensions shown.
3. After cutting new valve seats, lap the valve to the seat
using the lapping compound. After lapping, thoroughly
clean the valve seat and valve areas to remove any
traces of lapping compound. To verify that the valve face
is making proper contact to the valve seat, lightly coat
the valve seat area with Prussion blue, install the valve,
rotate the valve 1/4 turn while holding it down and then
bring it back to the original position. Remove the valve
and examine the valve seat. The valve seat should show
an even wear pattern from contact with the valve. Ex-
amine the valve. The dye should be evenly distributed
around the valve and in the center of the valve face.
Figure 57
Dimension of valve seat
Figure 58
Correction of valve seat
Cylinder Head Overhaul
Page 4 - 50
Groundsmaster
®
300 Series
Summary of Contents for Groundsmaster 328-D
Page 2: ......
Page 12: ...Torque Specifications Page 2 4 Rev A Groundsmaster 300 Series ...
Page 44: ...Troubleshooting Page 4 16 Groundsmaster 300 Series ...
Page 45: ...Groundsmaster 300 Series Page 4 17 Troubleshooting ...
Page 171: ...Groundsmaster 300 Series Page 6 25 Testing ...
Page 220: ...Repairs Page 7 24 Groundsmaster 300 Series ...
Page 320: ...Troubleshooting Troubleshooting Page 11 4 Groundsmaster 300 Series ...
Page 348: ...Troubleshooting Troubleshooting Page 12 4 Groundsmaster 300 Series ...
Page 379: ...Troubleshooting Groundsmaster 300 Series Page 13 3 Troubleshooting ...
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