2011-2012 Yamaha APEX SE / XTX Snowmobile Service Manual

Technician-level documentation for Yamaha APEX SE / XTX snowmobiles. This manual covers detailed inspection, repair, and assembly procedures for all systems. Part number LIT-12618-RX-03.

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Document Details

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Document Number / Seller:
30430 / Kathleen Murphy
File Size:
93.74 MB
File Type:
PDF
Language:
English
Printable:
Yes
Category:
Snowmobile
Last updated / verified
Aug 20, 2025

Models Covered & Key Technical Specifications

Yamaha APEX SE / XTX (2011-2012) (LIT-12618-RX-03) -- 2011-2012 Expert Handbook for Snowmobile | Dossier.

  • Approved Charge Quantity: 4.7 L is the required coolant capacity for system refills.
  • Baseline Alignment Specs: 0 - 15 mm alignment is the specified toe-out range for optimal steering.
  • Verified Power Framework: 3.6 kW is the specified output from the ignition system for normal operation.
  • Designated Throughput Data: 1,350 ± 100 r/min is the standard engine idle speed specification.
  • Certified Gross Dimensions: 2.0 mm is the required thickness for the primary sheave spring shim.
  • Reference Capacity Limits: 35.0 - 35.8 mm is the standard secondary sheave clearance measurement.

Professional Workshop Service Manual & Technical Specifications

Yamaha APEX SE / XTX (2011-2012) Snowmobile Service Manual: Official-Issue Yamaha APEX SE / XTX (2011-2012) Snowmobile Service Manual Service-Catalog

Validation-Data: Yamaha APEX SE / XTX (2011-2012) // Design-Core: Snowmobile / Power Train Logic // Validation-Data: Complete Overhaul Diagnostic Data.

Identifier Technical-Path Architecture
Chapter 1: General Information General Information Topics Component Overview
Chapter 2: Periodic Inspections and Adjustments Routine Maintenance & Tuning System Checks
Chapter 3: Chassis Frame & Suspension Details Structural Framework
Chapter 4: Power Train Drive System Components Transmission Mechanics
Chapter 5: Engine Internal Combustion Unit Motor Assembly

Documentation sections include: A thorough overview of machine identification, essential maintenance schedules, detailed chassis and power train specifications, comprehensive engine system documentation, and electrical system schematics. Properly requiring engine mounting adjustments to ensure proper operation and cyclic stress resistance. Model Information:

  • Engine Type: 4-Stroke, 3-Cylinder, Liquid-Cooled, DOHC, 4-Valve
  • Displacement: 998 cc
  • Bore x Stroke: 82.0 x 63.0 mm
  • Compression Ratio: 11.0:1
  • Fuel System: Mikuni BSR37 Carburetor, Twin Keihin
  • Ignition: T.C.I.
  • Spark Plug: CR9E (NGK)
  • Lubrication: Forced Lube, Wet Sump

FAQ

What is the **required** fluid capacity for the cooling system? keyboard_arrow_down

4.7 L is the required coolant capacity for system refills. The coolant mixing ratio is 3:2 (coolant:water), and it's recommended to change the coolant at least every season.

Calculate the **specified** component identification for the primary sheave spring. keyboard_arrow_down

90501-582L1 is the part number for the primary sheave spring with a spring rate of 24.5 N/mm and a preload of 343 N. Its free length is 87.4 mm.

What values are **essential** for the valve clearance adjustment? keyboard_arrow_down

0.11 - 0.20 mm for the intake valve and 0.21 - 0.25 mm for the exhaust valve are the essential cold valve clearance specifications.

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Rated 4 out of 5 stars
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The Yamaha APEX Service Manual is incredibly thorough and easy to follow. I appreciated the clear diagrams and step-by-step instructions. The download process was seamless, and customer support was quick to respond to my questions. Highly recommend!