Order the right GC54G part on the first try. This Kubota GC54G Parts Catalog (OEM #100Z0191) maps every component across six assemblies: rear frame and bags, chaff screen, blower, gearbox, blower components, and the deck spring kit. Each exploded-view diagram sits beside a numbered parts list, and an interchangeability table lets you cross-reference superseded numbers without guesswork. Need gearbox shims? They come in 0.1, 0.2, and 0.3 mm. The blower assembly is logged at 20.31 kgf, so you have exact match data before you call the counter. No more guessing because an online catalog never matched your serial number. Sections are bookmarked, so you jump straight to the assembly you need, search any part number by keyword, and close the order with the correct item.
What's Inside This Kubota GC54G Parts Manual
| System | Pages |
|---|---|
| Rear Frame Components & Bags | 3-4 |
| Cover, Chaff Screen & Related Items | 5-6 |
| Blower & Related Parts | 7-8 |
| Gearbox Parts Breakdown | 9-10 |
| Blower Parts List | 11-12 |
| Deck Spring Kit | 13-15 |
Every system also includes interchangeability symbols, a parts diagram, and a parts list table.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Shim thickness | 0.1 mm | p. 10 |
| GRASS BAG Weight | 0.3 kgf | p. 4 |
| NUT M12-1.75 Weight | 0.018 kgf | p. 4 |
| BOLT M12-1.75 X 25 Weight | 0.032 kgf | p. 4 |
| BLOWER ASSY GC54G Weight | 20.31 kgf | p. 8 |
| NUT M10-1.25 Weight | 0.005 kgf | p. 8 |
| GEARBOX ASSY Weight (Blower) | 4.4 kgf | p. 8 |
| O-RING Weight (Gearbox) | 0.001 kgf | p. 10 |
| BALL BEARING Weight (Gearbox) | 0.196 kgf | p. 10 |
| SHAFT OUTPUT Weight (Gearbox) | 0.8 kgf | p. 10 |
| WASHER BELLVIL Weight (Blower) | 0.005 kgf | p. 12 |
| BEARING SHAFT Weight (Blower) | 0.142 kgf | p. 12 |
Kubota GC54G Common Problems This Manual Covers
Kubota GC54G blower impeller worn smooth, suction drops and grass stops feeding into bags p. 7
Check the Blower & Related Parts exploded view on page 7 to pin down the correct impeller part number. Cross-reference the blower parts list on page 11 to confirm the impeller variant for your serial number range. The complete blower assembly weighs 20.31 kgf (page 8), so if the impeller alone is discontinued, the full assembly swap is documented there.
Manual Section: Blower & Related PartsDrive belt slipping or broken, can't identify correct replacement belt part number for bagger drive p. 7
Locate the drive belt in the Blower & Related Parts exploded view on page 7, where each component is called out by part number. Add the M10-1.25 mounting hardware listed on page 8 to your order, since those fasteners often need replacing at the same time. Verify serial number compatibility before you submit.
Manual Section: Blower & Related PartsGearbox mounting bolts back out after every mow, aluminum housing threads stripped and won't hold torque p. 9
Open the Gearbox Parts Breakdown on page 9 and identify the mounting bolt and shim part numbers from the exploded view. The gearbox takes shims in 0.1 mm, 0.2 mm, and 0.3 mm (page 10); order the full shim set with replacement fasteners to restore correct stack height. Confirm the M10-1.25 nut thread pitch on page 8 before placing the order.
Manual Section: Gearbox Parts BreakdownGrass bags torn along seam or base, correct replacement part number for rear frame uncertain p. 4
Pull the Rear Frame Components & Bags parts list on page 4 and match the bag item number to your configuration. Each grass bag is listed at 0.3 kgf; a candidate that weighs noticeably more when empty is probably the wrong variant. Check the chassis parts diagram on page 3 for the correct frame attachment style first.
Manual Section: Rear Frame Components & BagsChaff screen clogged, torn, or shredded after heavy leaf season, need correct replacement part number p. 5
Find the Cover, Chaff Screen & Related Items exploded view starting on page 5, then match the screen callout number to its part number in the list. Page 7 (Blower & Related Parts) shows how the screen seats against the blower intake; the M12-1.75 bolt at 0.032 kgf (page 4) is common rear-assembly hardware and may be needed alongside the screen.
Manual Section: Cover, Chaff Screen & Related ItemsBlower bearing shaft worn or noisy, need correct part number before ordering blower rebuild kit p. 11
Trace the bearing shaft through the Blower Parts List on page 11. The shaft is listed at 0.142 kgf (page 12); order the Belleville washer (0.005 kgf, page 12) at the same time, since it pairs directly with the shaft. Cross-reference the gearbox output shaft on page 9 to confirm the bearing seats correctly at the interface.
Manual Section: Blower Parts ListFrequently Asked Questions
What are the replacement specifications for blower impeller/fan?
The fan blower replacement for the Kubota GC54G carries Part No. 76700-41102. You'll find it called out in the manual's BLOWER PARTS LIST section.
What are the replacement specifications for drive belt?
Drive belt replacements for the GC54G use Part No. 76710-40851, which the catalog lists as "BELT GC54G & GC60G". You'll find this entry in the BLOWER PARTS LIST section of the manual.
Is this Kubota GC54G Parts Catalog a digital download?
Yes. The full 15-page searchable Parts Catalog downloads as a PDF the moment your payment clears. Open it on a laptop, tablet, or phone right at the workbench.
Can I print this Kubota GC54G manual?
None at all. The PDF ships DRM-free, so print whatever sections you want to carry out to the shop. Standard letter or A4 paper both work.
Document Quality
This document is a scanned PDF with an active OCR layer, allowing you to search and copy all text. The text quality is crisp and consistently readable throughout. Diagrams and illustrations are clear raster images, and all labels within them are easily legible. Pages are clean, well-aligned, and free from scan artifacts or other marks. One blank page is included at the end, explicitly noted as "Blank Page Inserted."
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