Hi Pete,
This will be a bit long-winded, but I'm going to quote from the IT manual. Hope this helps:On TE20 tractors prior to serial 36152, two methods are used to indicate the top center position of #1 and #4 pistons. On some of this group, the TC point is when a line on the crankshaft pulley indexes with a line on the timing gear cover. On others, the TC point is when two punch marks on the flywheel are in register with identical punch marks on the flywheel housing starter motor mounting pad. In the latter case, the marks cannot be seen until the starter motor is removed from the engine. On TE20 tractors after serial 36151, the flywheels are stamped with a zero mark indicating top center and with additional stamped lines from 0 to 30 degrees. These zero and degree lines index with a pointer at the flywheel inspection port which is located on the distributor side of engine. Install distributor to engine and rotate distributor housing clockwise until breaker contacts have just started to open, then tighten distributor clamp. Firing order is 1-3-4-2. Timing can be varied to suit operating conditions by loosening distributor body clamp and rotating distributor body counter-clockwise, when viewed from above, to retard the timing. Distributor automatic advance starts at 200 distributor rpm and has a maximum advance of 16 distributor degrees at 1100 distributor rpm. Man, I gotta get me a scanner!!
Chuck (CA)
| 
