1987-1988 Yamaha Terra Pro YFP350 Service Manual (P/N LIT-11616-06-46)

This official 175-page Yamaha service publication provides the baseline maintenance and diagnostic data for the 2NL and 2TX engine series. Designed specifically for the 1987–1988 Terra Pro YFP350 utility platform, it covers both the standard models and specific configurations for the Canadian market (YFP350U).

• Official Yamaha publication P/N LIT-11616-06-46, 1st edition (February 1987).
• Documents the unique PTO (Power Take-Off) gear system and governor controls exclusive to this utility ATV.
• Features comprehensive technical specifications, detailed lubrication charts, and precise cable routing diagrams for every chassis and engine assembly.

Documentation Overview

This manual serves as the definitive technical reference for servicing the Terra Pro. The content systematically moves from basic machine identification and required special tools into periodic inspection routines for the engine, drivetrain, and electrical systems. You will find detailed engine overhaul chapters covering both top-end and bottom-end assembly procedures. Furthermore, the carburetion and transmission sections break down the mechanics of the dual-range gear operation and the specialized governor-controlled mechanisms.

Specification Highlights

Fast, accurate work requires exact numbers. This reference provides the necessary factory data, including specific tightening torques for all fasteners, such as the cylinder head M10 bolts at 40 Nm (29 ft-lb). Fluid capacities are clearly mapped out, calling for 2.2 liters of engine oil and 0.56 liters for the differential gear case. Intake valve clearance is strictly specified at 0.06–0.10 mm.

For electrical diagnostics, the manual lists exact baseline parameters: the A.C. magneto charging current must rate at 13A or more at 1,500 r/min, supporting a 12V, 14AH battery system. Adhering to these exact factory specifications is critical for reliable performance. Always observe standard shop safety protocols, disconnect power sources before electrical diagnostics, and secure heavy drivetrain components properly to prevent injury or equipment damage during overhauls.

Note: This description outlines the contents of the manual and does not contain the repair instructions themselves.