1987 Yamaha SRX250T/TC Service Manual (P/N LIT-11616-06-04, OEM)
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Yamaha Models Covered & Key Technical Specifications
Models: Yamaha SRX250T, Yamaha SRX250TC
Model Years: 1987
Serial Numbers: SRX250T: JYA2NV00HA000101 and up (Frame), 2NV-000101 and up (Engine); SRX250TC: JYA2NW00HA000101 and up (Frame), 2NW-000101 and up (Engine)
Technical Data:
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Engine displacement: 250 cc class
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Idle speed: 1,350–1,450 r/min
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Compression pressure (Standard): 1,100 kPa (11 kg/cm², 156 psi)
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Compression pressure (Minimum): 900 kPa (9 kg/cm², 128 psi)
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Compression pressure (Maximum): 1,200 kPa (12 kg/cm², 171 psi)
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Engine oil capacity (without filter): 1.5 L (1.32 Imp qt, 1.6 US qt)
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Intake valve clearance (Cold): 0.08–0.12 mm (0.003–0.005 in)
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Exhaust valve clearance (Cold): 0.10–0.14 mm (0.004–0.006 in)
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Main circuit breaker: 20 A
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Standard Spark Plug: NGK D8EA or NIPPONDENSO X24ES-U
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Drive chain slack: 15–20 mm (0.6–0.8 in)
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Fork oil capacity (each fork): 243 cm³ (8.55 Imp oz, 8.22 US oz)
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Front axle nut torque: 75 Nm (7.5 m·kg, 54 ft·lb)
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Drain plug torque: 43 Nm (4.3 m·kg, 31 ft·lb)
Yamaha Manual Features & Content Preview
- Covers standard maintenance, engine overhauls, and chassis adjustments for the 1987 Yamaha SRX250T and SRX250TC lightweight sport motorcycles.
- Original OEM publication (P/N LIT-11616-06-04), first edition February 1987.
- Includes 100+ pages of technical illustrations, exploded-view assembly diagrams, and torque value tables.
- Provides the exact baseline mechanical data for 2NV and 2NW series engines used during the initial model launch.
Engine and Maintenance Overview
Whether you are tearing down the transmission or just running routine maintenance, this service manual eliminates the guesswork. It lays out the exact factory procedures for periodic inspection intervals, shim-style valve clearance adjustments, and routine lubrication requirements. You get comprehensive disassembly specifications for the crankshaft, balancer shafts, and complete electrical system testing.
Technical Specifications and Shop Data
Precision matters when rebuilding the 2NV and 2NW series engines. The detailed torque tables give you the exact mounting values for the cylinder head, oil drain plugs, and primary drive assemblies to ensure a reliable build. For instance, the cylinder head warpage limit is strictly set at 0.03 mm for precision inspections, while intake valve stem clearance is listed at 0.010–0.037 mm. You will also find electrical baselines, such as the battery charging current specified at 1.2 amps for 10 hours. Always review the manufacturer's heavy lifting and shop safety guidelines before starting any teardowns to prevent personal injury or component damage. Y
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