Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 341

6A1-50 ENGINE MECHANICAL (G16 ENGINE)
ASSEMBLY
1) Before installing valve guide into cylinder head, ream guide
hole with special tool (11 mm reamer) so remove burrs and
make it truly round.
Special tool
(A) : 09916-34542
(B) : 09916-38210
2) Install valve guide to cylinder head.
Heat cylinder head uniformly at a temperature of 80 to 100°C
(176 to 212°F) so that head will not be distorted, and drive
new valve guide into hole with special tools. Drive in new
valve guide until special tool (Valve guide installer) contacts
cylinder head. After installing, make sure that valve guide
protrusions (1) by specified hight from cylinder head.
Special tool
(C) : 09916-56011
(D) : 09916-58210
NOTE:
• Do not reuse valve guide once disassembled.
Install new valve guide (Oversize).
• Intake and exhaust valve guides are identical.
Valve guide oversize
0.03 mm (0.0012 in.)
Valve guide protrusion (In and Ex)
11.5 mm (0.45 in.)
3) Ream valve guide bore with special tool (5.5 mm reamer).
After reaming, clean bore.
Special tool
(A) : 09916-34542
(B) : 09916-34550
4) Install valve spring seat to cylinder head.