Sea-doo NAUTICA J-CLASS NZS21 User manual

1
Distributor Maintenance Manual
Date: 17 Apr 2023
Rev.: 02
Model no.: NZS21
J-CLASS
NEA22750

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Table of Content
1) Battery Pod Replacement (NZS21B) P4-5
2) Steel Latch Replacement (N21023) P6-7
3) Go Pro Mount Replacement (N21018) P8
Multipurpose Mount Replacement (N21002) P8
4) Rear Housing Replacement (N21011) P9-13
Rear Housing Foam Replacement (N21012) ------
Top Cap Replacement (N21007) ------
Top Cap Foam Replacement (N21008) ------
Bottom Cap Replacement (N21003) ------
Bottom Cap Foam Replacement (N21004) ------
Battery Support Replacement (N21006) ------
5) Handle Top Right Cover Replacement (N21021) P14-18
Handle Top Left Cover Replacement (N21027) ------
Handle Left Top Foam Replacement (N21026) ------
Right Trigger Module Replacement (N21019) ------
Left Trigger Module Replacement (N21024) ------
6) Nozzle Rear Grille Replacement (N21013) P19-24
Left (N21025)/ Right (N21020) Nozzle Foam Replacement ------
Left (N21028)/ Right (N21029) Nozzle Front Grille Replacement ------
Propeller Replacement (N21041) ------
7) 7.1 Bottom Housing Face Seal Replacement (N21009) P25-29
7.2 Leakage Sensor Bracket Replacement (N21015) P29-30
7.3 Bottom Housing Foam Replacement (N21005) P30
7.4 Power EMI Suppression Core Inductor Replacement (N21041) P31
7.5 Main Board Housing Seal Replacement (N21010) P31-32
7.6 Motor EMI Suppression Core Inductor Replacement (N21040) P33
7.7 Positive (N21032) / Negative (N21033) Power Wire Replacement P33-35
7.8 LED Board Cable Replacement (N21031) P35-36
LED Board Replacement (N21038) ------
LED Housing Replacement (N21001) ------
8) 8.1 Top Housing Module Replacement (N21017) P37-40
8.2 Main Board Replacement (N21036) P40-41
8.3 Main Board & Driver Board Cable Replacement (N21034) P42
8.4 LCD Board Cable Replacement (N21031) P42
8.5 LCD Display Board Replacement (N21037) P43-44
8.6 LCD Backlight Blocking Sheet Replacement (N21022) P43-44
9) Brushless Motor Replacement (N21039) P45-47
10) Activate BT for software upgrade and product diagnosis P48-49
11) Error codes / descriptions / actions P50

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Tools required for repairing.

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NZS21 - J-CLASS
NEA22750
Section 1 - Battery Pod Replacement (NZS21B)
Unscrew rear housing knob and slide up to remove rear housing
Flip out two battery pod latches to unlock battery pod

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Grip battery pod handle to pull battery pod out
Change by fully charged battery pod, add sealing grease over 4 seal ring surfaces
Slide in battery pod with guiding
slot facing bottom of seascooter
Press two latches down to lock battery pod in place
Slide rear housing back down
Turn rear housing knob clockwise to lock rear housing

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NZS21-J-CLASS
NEA22750
Section 2 - Steel Latch Replacement (N21023)
Unscrew 2 mounting screws and remove latch body
Unscrew 2 mounting screws and remove hook piece

7
Replace new latch body placing between 2 guiding ribs
Replace new hook piece placing within the 3 guiding ribs
Fasten 2 mounting screws to hold hook piece in place

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NZS21-J-CLASS
NEA22750
Section 3
GoPro Mount (N21018) and Multipurpose Mount (N21002) Replacement
GoPro Mount (N21018) Multipurpose Mount (N21002)
Unscrew 2 mounting screws to take out GoPro
camera mount
Replace new GoPro camera mount or change
to multipurpose mount.
MAKE SURE the indexing key slot is matched.
Fasten 2 mounting screws to hold the mount in place

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NZS21-J-CLASS
NEA22750
Section 4
Rear Housing Replacement (N21011)
Rear Housing Foam Replacement (N21012)
Top Cap Replacement (N21007)
Top Cap Buoyancy Foam Replacement (N21008)
Bottom Cap Replacement (N21003)
Bottom Cap Buoyancy Foam Replacement (N21004)
Battery Support Replacement (N21006)
Rear Housing (N21011)
Top Cap (N21007)
Top Cap Buoyancy Foam
(N21008)
Rear Housing Foam
(N21012)
Bottom Cap (N21003)
Bottom Cap Buoyancy Foam
(N21004)
Battery Support
Replacement (N21006)

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Unscrew rear housing knob and slide up to remove rear housing
Unscrew to remove rear housing buoyancy foam
Replace new rear housing buoyancy foam and fasten 2 mounting screws

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Unscrew 4 top cap mounting screws and undo 2 side latches to remove top cap
Take out top cap buoyancy foam
Unscrew 4 mounting screws to remove bottom cap

12
Remove bottom cap buoyancy foam
Unscrew 8 mounting screws to take out battery support bracket
Replace new battery support bracket and fasten 8 mounting screws to hold
Replace new bottom cap buoyancy foam

13
Replace new bottom cap and fasten 4 mounting
screws to hold
Replace new top cap buoyancy foam
Replace new top cap and press both sides down to
engage two latches
Fasten 4 mounting screws to hold top
cap in place
Slide down rear housing and fasten locking knob clockwise to hold

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NZS21-J-CLASS
NEA22750
Section 5
Handle top right cover replacement (N21021)
Handle top left cover replacement (N21027)
Handle left top foam replacement (N21026)
Right trigger module replacement (N21019)
Left trigger module replacement (N21024)
Handle top right cover (N21021)
Handle top left cover (N21027)
Handle left top foam (N21026)
Right trigger module (N21019) Left trigger module (N21024)

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Unscrew to remove LR handle top covers
Take out handle top left foam
Unscrew right trigger module
Unscrew left trigger module

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Take out right trigger module and take out right sensor from module slot. DO NOT damage sensor
cable
Take out master switch sensor from module
slot. DO NOT damage sensor cable
Replace new right trigger and master switch
module
Pass master switch sensor through the hole and lay down on slot then tidy up cable

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Fit right trigger module down through 2 screw
posts
Fasten 2 mounting screws to lock right trigger
module in place
Fit right trigger sensor to slot and tidy up
sensor cable
Replace new handle top right cover and fix it by 4
mounting screws
Fit left trigger sensor to the slot of new left trigger module and tidy up sensor cable

18
Fit left trigger module down through 2 screw posts
Fasten 2 mounting screws to lock left trigger module in place
Fit new handle left top foam in place
Replace new handle top left cover and fix it by 4 mounting screws

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NZS21-J-CLASS
NEA22750
Section 6
Nozzle Rear Grille Replacement (N21013)
Left (N21025)/ Right (N21020) Nozzle Foam Replacement
Left (N21028)/ Right (N21029) Nozzle Front Grille Replacement
Propeller Replacement (N21041)
Nozzle Rear Grille (N21013)
Left (N21028)/ Right (N21029)
Nozzle Front Grille
Propeller (N21041)
Left (N21025) Nozzle Foam Set
Right (N21020) Nozzle Foam

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Unscrew and take out right nozzle rear grille
Slide out rear nozzle buoyancy foams those with debossment R1, R2 and R3
Unscrew right nozzle front grille and pull out