TSRM/MK3 Supra/Repair Manual
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IG/Ignition System, page 20

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p.021
Ignition System — MK3 Supra Ignition System, page 20
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Page text (OCR transcript)
IG-20

IGNITION SYSTEM — Distributor (7M-GE)

8. ADJUST IGNITION TIMING

(a) Using SST, connect terminals TF1 and E1 of the check connector.
SST 09843-18020

(b) Check the idle speed.
Idle speed: 7M-GE 700 rpm
           7M-GTE 650 rpm

(c) Using a timing light, slowly turn the distributor (7M-GE) or cam position sensor (7M-GTE) until the timing mark on the crankshaft pulley is aligned with the 10° mark. Tighten the distributor bolt and recheck the ignition timing.

Ignition timing: 10° BTDC @ idle
[w/ Terminals TF1 and E1 connected
and Transmission in "N" range]
Torque: 140 kg·cm (10 ft·lb, 14 N·m)

(d) Remove SST.
SST 09843-18020

9. FURTHER CHECK IGNITION TIMING

Check the ignition timing advance.
Ignition timing:
7M-GE  9 — 10° BTDC @ idle
7M-GTE More than 12° BTDC @ idle

10. DISCONNECT TACHOMETER AND TIMING LIGHT FROM ENGINE