Spark Plug Gap Adjustment And Tool Diagram - Piper Navajo Chieftain PA-31-350 Service Manual

.250 DIA. ROD
425
NAVAJO CHIEFTAIN SERVICE MANUAL
1. SPARK PLUG
2. SEATING SURFACE
1
3. COMBUSTION TUBE ASSEMBLY
4. GROUND ELECTRODE
2
S. JACKET ASSEMBLY
6. COMBUSTION HEAD ASSEMBLY
7. MEASURE
8. GASKET
7
6
4
447
6.00
SLIP FIT (.255
DIA. HOLE
18 MM THREAD
STOCK
UNDER CUT.010
MARK WITH
3.387
MATERIAL CAN BE SAE TYPE 303, 321 OR 347 ST. ST. OR ALUMINUM- CASE HARDENED
P/N 55998-2
Figure 13-11. Spark Plug Gap Adjustment and Tool
Reissued: 9/23/80
4B24
HEATING AND VENTILATING SYSTEM