This 17-page Bolens 5118H Parts Catalog PDF breaks down the whole 18 HP tractor into exploded views with factory part numbers: fender and grille, brake and speed control, steering and front axle, engine and fuel system, hydro and transaxle, right down to the Eaton Model 11 transmission internals. Each assembly drawing pairs with its own numbered parts list, so you match the piece in your hand to the exact number Bolens printed. You also get a full wiring diagram with legend covering the ignition switch, solenoid, starter, and cruise switch, plus the electrical harness parts list. Even the assembly notes are factory: the hydro and transaxle hardware torques to 25-30 ft. lbs., printed right on the drawing. No more guessing part numbers off a rusted casting at a swap meet. Bookmarked PDF; download it, pull it up on your phone at the workbench, and get this tractor back on the lawn.
What's Inside This Bolens 5118H, Bolens 18 HP Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fender and Grille | 1-2 | Seat, Hood, Grille, Fender, Foot Rest, Side Cover, Grille Support, Side Cover Assembly |
| Brake and Speed Control | 3-4 | Brake Assembly, Speed Control Disc, Neutral Plate, Brake Pedal, Speed Control Rod, Brake Return |
| Steering and Front Axle | 5-6 | Steering Wheel, Front Axle, Steering Gear, Spindle Assembly, Tie Rod, Steering Bracket |
| Engine and Fuel System | 7-8 | Fuel Tank, Muffler, Drive Shaft, PTO Shaft, Engine Mount, PTO Guard, Fuel Line, Muffler Clamp |
| Hydraulic Cylinder | 9-10 | Cylinder, Rod Assembly, Head, Piston, Seals, Back-Up Rings, Cylinder Assembly, Control Arm, Rocker Arm, Drive Pin, Tube Assembly, Valve Link |
| Hydro and Transaxle | 11-12 | Filter, Manifold, Pump, Transaxle Housing, Differential Carrier, Axle, Bevel Gear |
| Wiring Diagram | 13-14 | Ignition Switch, Solenoid, Starter, Battery, Light Switch, Cruise Switch, Fuse, Attachment Drive Clutch, Headlights |
| Electrical System | 15-16 | Headlight Harness, Battery, Ignition Switch, Fuel Sender, Solenoid, Main Harness, Fuel Gauge, Battery Cable, Fuse |
| Eaton Transmission Model 11 Assembly | 17 | Charge Pump Kit, Input Shaft Sub Assembly, Pump Rotor and Ball Assembly, Cam Ring Assembly, Pintle Assembly, Motor Rotor and Ball Sub Assembly |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Brake and speed control linkage torque (item 50) | 24 ft. lb. (32 Nm) | p. 3 |
| Hydro and transaxle assembly torque | 25-30 ft. lbs. | p. 11 |
Bolens 5118H, Bolens 18 HP Common Problems This Manual Covers
Bolens 5118H won't crank, need part numbers for ignition switch, solenoid, and battery cables
Trace the circuit on the wiring diagram on page 13; the legend on page 14 names the fuse, solenoid, and starter. Match each component to its callout in the electrical system assembly on page 15, then order by number from the parts list on page 16. Measure your old battery cables in inches so the replacements reach.
Manual Section: Electrical System Assembly p. 15Hydraulic lift leaking down, can't identify the correct piston seals and back-up rings
Remove the cylinder and match the piston, seals, and back-up rings to the exploded view on page 9. Order each item by its callout number from the hydraulic cylinder parts list on page 10. Measure the rod diameter in inches before ordering so the seal kit matches your cylinder, and replace back-up rings whenever you replace seals.
Manual Section: Hydraulic Cylinder Assembly p. 9Hydrostatic drive sluggish and whining, need filter and charge pump kit part numbers
Check the hydro and transaxle assembly on page 11 to locate the filter and manifold callouts, then pull part numbers from the list on page 12. For the charge pump kit and pintle assembly, use the Eaton Model 11 breakdown on page 17. Torque the hydro and transaxle fasteners to 25-30 ft. lbs. on reassembly.
Manual Section: Hydro and Transaxle Assembly p. 11Engine cranks but starves for fuel, unsure which fuel line and tank fittings fit
Inspect the engine and fuel system assembly on page 7 to identify the fuel tank, fuel line, and clamp callouts, then order by part number from page 8. Measure your old fuel line's inside diameter and length in inches before ordering; stale gas often hides a cracked line that leaks air.
Manual Section: Engine and Fuel System Assembly p. 7Brake pedal flops and won't return, can't tell which spring and linkage parts wore out
Check the brake and speed control assembly on page 3 and match the pedal, neutral plate, and return spring to their callouts. Order replacements by number from the parts list on page 4. Measure the free length of the old return spring in inches; a stretched spring lets the pedal flop.
Manual Section: Brake and Speed Control Assembly p. 3Frequently Asked Questions
What is the torque specification for the seat support assembly mounting bolt?
The seat support assembly mounting bolt must be torqued to 24 ft. lb. (32 Nm). p. 3
What is the torque specification for the front axle assembly mounting bolts?
The front axle assembly mounting bolts must be torqued to 70 ft. lbs. (95 Nm). p. 5
What is the torque specification for the transaxle coupling?
The transaxle coupling assembly requires a torque of 25-30 ft. lbs. p. 11
What is the part number for the 30A fuse used in the electrical system?
The replacement fuse for the electrical system is part number 1743616 (30A). p. 16
What is the part number for the PTO belt?
The PTO belt is part number 1742628 and is supplied as a matched set of 2. p. 8
What format is this Bolens 5118H manual in?
Instant PDF download. You get the full 17-page searchable Parts Catalog immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print a copy of this Bolens 5118H Parts Catalog for the shop?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Reviews
There are no reviews yet.