Valve Guide; Valve Guide Replacement - Husqvarna 2011 TE 630 Workshop Manual

ENGINE OVERHAUL

Valve guide

Perform a careful visual inspection of the valve guide.
To determine wear, measure valve to valve guide clearance in the "x" and "y" di-
rections (at right angles to each other) using a suitably positioned dial gauge.
Intake valve: normal clearance: 0.008 - 0.035 mm
Service limit: 0.05 mm
Exhaust valve: normal clearance: 0.018 - 0.045 mm
Service limit: 0.08 mm

Valve guide replacement

Remove the valve guide from the cylinder head using a suitable punch.
Make sure that the cylinder head is not damaged.
Heat up the head in a furnace up to 170 °C.
Install the new guide from the top of the head using a suitable punch. Smear the
guide with oil before installation. Fit new sealing rings.
Part. N. 8000 H2051 (02-2010) G.5