Assembly - BRP Johnson J30TEL4SUA 2007 Service Manual

If the spring's preload is less than the service limit,
replace the valve spring.
Valve Spring Preload
43 to 50 lbs. (193 to 223 N) for
Standard
Service Limit
Use a square and a surface plate to check each
spring for squareness (clearance between the end
of the valve spring and the square).
The service limit for valve spring squareness is
0.08 in. (2.0 mm). If the measurement exceeds
this specification, replace the valve spring.
1.48 in. (37.5 mm)
40 lbs. (177 N) for
1.48 in. (37.5 mm)
001509
001510

Assembly

IMPORTANT:
Before assembling the cylinder
head, inspect and service the components. Refer
to "Inspection and Servicing" on page 139.
Install the valve spring seat to the cylinder head.
Apply engine oil to a new valve stem seal and the
spindle of the valve guide installer attachment. Fit
the seal to the spindle, then install the seal to the
valve guide by pushing on the installer by hand.
Make sure that the seal is properly fixed to the
valve guide.
1. Valve guide installer handle
2. Valve guide installer attachment
3. Valve stem seal
Apply engine oil to the valve stem and the valve
guide bore. Install the valve in the valve guide
bore.
Install the valve spring and the valve retainer.
Make sure that the narrow spiral area of the valve
spring is facing toward the valve seat.
1
1. Wide-pitch spiral (retainer side)
2. Narrow-pitch spiral (seat side)
POWERHEAD
CYLINDER HEAD
1
2
3
001518
2
001520
147
7